I mark the centers and the quarters, the eighths,sixteenths. if I need to, on both the borders and the center of the quilt. Mark everything to death! That way if there is any easing to do it will be done evenly.
This is the same process I follow. Pinning at centers, quarters, eighths and sixteenths and pinning border and top to match at the pins. Sew, removing pins along the way. Perfect every time.